[FIX] website_sale: allow updates after product custom text edition
[FIX] website_sale: allow updates after product custom text edition

Custom text on product pages was part of the main template thus
preventing who modifies it to receive updates on the view.

task-2040764

closes odoo/odoo#37288

Signed-off-by: Quentin Smetz (qsm) <75b324bb495ac8d4f83496f7c52eda774af7ed7a@odoo.com>

ygol/odoo,ygol/odoo,ygol/odoo,ygol/odoo,ygol/odoo,ygol/odoo,ygol/odoo